AD9221/AD9223/AD9220
(AVDD = +5 V, DVDD = +5 V, fSAMPLE = 1.5 MSPS, TA = +25؇C)
AD9221–Typical Characterization Curves
1.0
1.0
8,180,388
0.8
0.8
0.6
0.4
0.6
0.4
0.2
0.0
0.2
0.0
–0.2
–0.4
–0.6
–0.2
–0.4
–0.6
–0.8
–1.0
121,764
85,895
N+1
–0.8
–1.0
N–1
N
0
4095
0
4095
CODE
CODE
CODE
Figure 2. Typical DNL
Figure 3. Typical INL
Figure 4. “Grounded-Input”
Histogram (Input Span = 2 V p-p)
80
75
70
65
60
55
50
–50
–55
–60
–65
–70
80
75
–0.5dB
–20.0dB
–0.5dB
–6.0dB
70
65
–6.0dB
–6.0dB
–0.5dB
–75
–80
60
55
50
–20.0dB
–20.0dB
–85
–90
45
40
–95
45
40
–100
0.1
1.0
0.1
1.0
0.1
1.0
FREQUENCY – MHz
FREQUENCY – MHz
FREQUENCY – MHz
Figure 5. SINAD vs. Input Frequency
(Input Span = 2.0 V p-p, VCM = 2.5 V)
Figure 6. THD vs. Input Frequency
(Input Span = 2.0 V p-p, VCM = 2.5 V)
Figure 7. SINAD vs. Input Frequency
(Input Span = 5.0 V p-p, VCM = 2.5 V)
–60
–65
–70
–75
–50
–55
100
90
–20.0dB
80
70
–60
–65
SFDR
60
–0.5dB
–80
–70
5V p-p
50
–85
–75
SNR
2V p-p
40
–6.0dB
–90
–80
30
20
–95
–85
–90
–100
10
–60
0.1
1.0
0
0.2 0.3 0.4
0.6 0.8
1
2
3
–50
–40
–30
–20
–10
FREQUENCY – MHz
A
– dBFS
SAMPLE RATE – MSPS
IN
Figure 8. THD vs. Input Frequency
(Input Span = 5.0 V p-p, VCM = 2.5 V)
Figure 9. THD vs. Sample Rate
(AIN = –0.5 dB, fIN = 500 kHz,
Figure 10. SNR/SFDR vs. AIN (Input
Amplitude) (fIN = 500 kHz, Input Span
= 2 V p-p, VCM = 2.5 V)
VCM = 2.5 V)
–6–
REV. D
ADI [ ADI ]
